notgnoshi / bitfield Goto Github PK

diff --git a/bitfield.py b/bitfield.py
index 229b473..21aa646 100644
--- a/bitfield.py
+++ b/bitfield.py
@@ -161,6 +161,8 @@ class Bitfield(object):
         '0b0'
         """
         length = len(self)
+        if isinstance(value, __class__):
+            value = value.value
         if isinstance(key, int):
             if key >= length or key < -length:
                 raise IndexError("Bitfield index out of range")